Manufacturer of steel investment castings using the lost-wax process – from prototype to high-volume series, ready to install from a single source
tsf Tübinger Stahlfeinguss Franz Stadtler GmbH + Co. KG
Tübingen-Hirschau (DE)New on Amplifa
About tsf Tübinger Stahlfeinguss
tsf Tübinger Stahlfeinguss manufactures precision steel castings using the lost-wax process (investment casting) with part weights from 10 g to over 70 kg and component lengths up to approx. 500 mm. The material spectrum includes unalloyed carbon steels, alloyed high-grade construction steels, and corrosion-, acid- and heat-resistant steels, including quenched and tempered steels, case-hardening steels, nitriding steels and tool steels. In addition to series investment casting production, tsf offers rapid prototyping and rapid tooling for prototypes and small (very small) series. The value chain extends from wax model production through casting, cutting, grinding and heat treatment to machining, surface coating and 100% final inspection. Customer industries include mechanical and plant engineering, medical and pharmaceutical technology, food technology, automotive, agricultural and construction machinery, defence technology, energy and conveying technology, leisure, and aviation. The family-owned company, founded in 1968, employs more than 50 staff at its Tübingen-Hirschau site.
- Site
- Tübingen
- Processes
- Investment casting (lost-wax process) - steel investment casting, Rapid prototyping (3D model production for investment casting), Rapid tooling (3D tool/plastic mould for small series), Wax model production (wax injection), Ceramic shell production (dipping, sanding, drying; first layer of zircon sand), Melting out the wax in the steam autoclave, Firing of the ceramic moulds, Casting (steel melt from induction furnace into hot ceramic moulds)
- Materials
- G42CrMo4, C22, C45, GX20Cr14, GX22CrNi17, GX35CrMo17, GX5CrNi19-10, GX4CrNi13-4
- Certificates
- DIN EN ISO 9001:2015, ISO 9001
- Founded
- 1968
- Employees
- more than 50
- Industries
- Mechanical and plant engineering, Medical and pharmaceutical technology, Food technology, Automotive/Commercial vehicles, Agricultural and construction machinery, Defence technology/Defense
Sites
Tübingen-Hirschau
DEProduction and Sales
- Part weight / size
- 10 g to over 70 kg
- Lot size
- Prototype to high-volume series (quantities in the millions)
- Materials
- Carbon steels, high-grade construction steels, corrosion-, acid- and heat-resistant steels
- Induction furnace
- Steam autoclave
- Wax injection machine
- Photovoltaic system
Investment Cast Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Investment casting (lost-wax process) - steel investment castingCasting | – | approx. 500 mm | 10 g – over 70 kg | Prototype/single piece – High-volume series (quantities in the | unalloyed carbon steels, alloyed high-grade construction steels, corrosion-, acid- and heat-resistant steels, quenched and tempered steels, case-hardening steels, nitriding steels, tool steels, 17-4PH (1.4549) |
| Rapid prototyping (3D model production for investment casting)Additive | – | – | – | Single piece – Smallest lot sizes | – |
| Rapid tooling (3D tool/plastic mould for small series)Casting | – | – | – | Small (very small) series – Small series | – |
| Wax model production (wax injection)Casting | – | – | – | – | – |
| Ceramic shell production (dipping, sanding, drying; first layer of zircon sand)Casting | – | – | – | – | – |
| Melting out the wax in the steam autoclaveCasting | – | – | – | – | – |
| Firing of the ceramic mouldsCasting | – | – | – | – | – |
| Casting (steel melt from induction furnace into hot ceramic moulds)Casting | – | – | – | – | Steel |
| Cutting (cast part/casting tree)Machining | – | – | – | – | – |
| Blasting (removal of ceramic residues)Surface | – | – | – | – | – |
| Gate grindingMachining | – | – | – | – | – |
| Heat treatmentHeat treatment | – | – | – | – | – |
| Straightening processForming | – | – | – | – | – |
| Machining (according to customer requirements)Machining | – | – | – | – | – |
| Surface coatingSurface | – | – | – | – | – |
| Final inspection / visual inspection of 100% of all investment cast productsTesting | – | – | – | – | – |
| Chemical analysis of every casting batch (batch documentation)Testing | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Induction furnace | – | – | – | – | Tübingen-Hirschau |
| Steam autoclave (melting out) | – | – | – | – | Tübingen-Hirschau |
| Wax injection machine | – | – | – | – | Tübingen-Hirschau |
| Photovoltaic system (energy supply, largest possible on the roof) | – | 1 | – | – | Tübingen-Hirschau |
Additional services
Quality
tsf performs a visual inspection on 100% of all investment cast products and subjects every casting batch to a chemical analysis with complete documentation. The quality management system is certified to DIN EN ISO 9001:2015.
| Evidence | Tübingen-Hirschau |
|---|---|
| ISO 9001 |
Company History
- 1968
Founded by Inge and Franz Stadtler together with Carl-Joseph Hilbring in Tübingen; tsf counts among the German pioneers in steel investment casting.
- 2012
Johanna Stadtler took over the leadership of tsf.
- 2019
Awarded the Environmental Prize of the Stadtwerke Tübingen for environmental management and the photovoltaic system.
- 2024
In March, handover of the management from Johanna Stadtler to Markus Kemmner; in November, 55th company anniversary; acquisition of a long-standing supplier for cutting and grinding with integration by the end of 2024 at the Tübingen site.
- 2025
Ottmar Hurm (project management, from 01.04.) and Jens Hünefeld (Technical Director, from 01.10.) strengthen the team.